It is asking you to select the correct prefix to add to both words.
Let's practise
Tick which prefix below can be used with both of the words.
necessary believable
dis
un
mis
re
- Read the question carefully and read it again. What is it asking you to do?
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- Try each option with both the words to find which ones make sense. Always check all the options.
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disnecessary/disbelievable = No unnecessary/unbelievable = Yes misnecessary/misbelievable = No renecessary/rebelievable = No
- Tick the correct box.
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un
- Check your answer.